メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.449570083478 42.9233075102817, 143.450106324889 42.923346853943, 143.450101792736 42.9233822002605, 143.449963240151 42.9244621003327, 143.44943995317 42.9244256115597, 143.449300031775 42.9244158628767, 143.449206087644 42.9244093165997, 143.449003433081 42.9243951966127, 143.448942451506 42.9243909476344, 143.448886206388 42.9243872368241, 143.449016567476 42.9233079137358, 143.449021486144 42.9232671998658, 143.449110200073 42.923273734503, 143.449570083478 42.9233075102817)) ^^http://www.opengis.net/ont/geosparql#wktLiteral